Spring-wheel.



W. L. MANN.

SPRING WHEEL.

APPLICATION PILEDMAYs,1911.

2 SHEETSYSHEET l.

W. L. MANN. SPRING WHEEL.'

APPMGATION HLED MAYs, m11A LYSS. Patented Oct. i4, 1913.

2 SHBETSASHBET 2.

SERING-VJHEEL.

Specification of Letters 33e-teilt.

@ein del, ill.

Application led May 3, H1.l Serial lilo.' 624,756.

To all echo/mv t' may concern Be it known that l, lWILLiAiu L. MANN, citizen of the United States, residing at St. Joseph, in the county of Buchanan and State of Missouri, have invented new and Auseful improvements in Spring-llheels, of

which the following is a specification.

The objectoic the invention is to increase the strength and durability of spring wheels' Without decreasing the yielding properties thereof. y,

The above and other objects will appear and be better understood from the following description taken in connection with the accoinpanying drawings in which ligure l isa side elevational the device:

Wheel l provide a plurality of overlapping sprinfr loopsm, alternately secured together in any preferred manner suchas by rivets 5. Each loop is formed preferably, though not necessarily, or' a single piece of suitable metal the intermediate portion 6 of which bears on a leaf spring'the latter bearing on a holster 8 on the inner surface of the rim l) of the Wheel, the parts being' secured by nieans of clip rlhe clip o comprises a curved plate l0 which bears on .the central portion of the inner surface oft-he part 6 and has arms li which bear on the sides of the parts ll, 7 and S. The arms l1 coperate with the bolts 12 to prevent lateral displacenient of the Parts. The bolts l2 pass through openings in the parts 6, 7 and 8 and also through openings in the rim 9 and in addition to preventing lateral displace- Y ment oi" the parts 6, 7 and 8 serve to connect these parts to the riin 9, the bolts being secured by suitable nut-s i3.

The portion 6 of each spring and each leaf spring are curved on the arc of a circle, the end portion of 'the leaf spring being seouredto the portion 6 by means of clips 17 which extend transversely of the leat` spring and have angular shaped end portions 13 which extend over the sides anl .lighter material for the springs a.

bear on the inner :tace of the portion 6. Each clip is further provided With a pin 19 which extends through an opening 2O in the end portion of the leaf spring; on which it bears. The h ub c comprises opposed sections 21 and 22 secured together in any preferred manner such as by bolts ,il plurality of grooves or recesses 2e formed in the inner faces of the sections of the huh, the opposite ends of each groove or recess extending 'through the periphery of the hub and communicating with the adjacent grooves. The curved end portions of each spring are'inserted into the remote ends of adjacent grooves or recesses as shown, the straight portions oit alternate springs being secured together by rivets as before described. As shown in Fig. 2 the curved portions 6 of the spring are oil set and arranged in staggered relation and secured to the inner surface of the rim as before ilescribed. l have shown the riin il as being channeled and provided with a rubber tire shown. lt is to be understood however, that this specific form of tire and riin may be dispensed with if desired and a metallic tire with the usual riin employed instead.

By shaping the springs a shown a high degree of resiliency is obtained and the provision of the leaf springs permits the use of It will be seen that a comparatively small portion of each of the rsprings a namely that portion bet-Ween the ends of the lest spring and rivets is not reinforced. rlparts est strain during use but by virtue oi t1 ,i comparatively short lengths, excessive yielding, ivill be prevented and by virtue or the staggered relation of the springs the vWheel as a Whole will be materially. strengthened.

that is claimed as new is:

A spring,r Wheel includinga rini, a hub formed with a plurality of curved recesses opening through the surface oitl the hub, iinniediately adjacent recesses lfiavingj a coinnion entrance opening, and a plurality of spring; loops, said loops haring their terininais inserted in and extending; partly throu 1 adjacent recesses7 the respective terminals entering the respective recesses from opposite directions, the sections of the adjacent loops being secured together beyoud the hub, said connected sections entern testimony Whereof' aX my signature 111g the common entrance of the lmmedlately 1n presence of two Wltnessos. ndgacent recesses, and means for secumng the loops to the rim 'whereby pressure upon any WMLAM L' MANN' 5 particuar loop isvt'hrough the recess orma- W'tnesses':

tion resisted by the tension of the adjacent @SCAR A. BANDEL,

loopE CLUFF B. MANN. 

